QPushButton#registerButton,#forgetPasswordButton{
    border:none;
    color: blue;
}
QLineEdit#usernameLineEdit, #passwordLineEdit{
    border: 1px solid #ccc;
    border-radius: 4px;
}
QLineEdit#usernameLineEdit:focus, #passwordLineEdit:focus{
    outline: 0;
    border: 2px solid #80bdff;
}
QPushButton#loginButton{
    color: #fff;
    border:1px solid transparent;
    background-color: #007bff;
    border-radius: 3px;
}
QLabel#label_4{
    color: #222;
}
QPushButton#loginButto{background-color:rgb(127,255,170);border-radius:4px;}
QLabel#label{background-color:lightyellow;}